Stop mechanism for looms



J. OUELLETTE.

STOP MECHANISM- FOR LOOMS. APPLICATION FILED JQNE 30. 1919- Mania):

Patented Oct. 18, 1921.

UNITED STAT JOHN OUELLETTE, OF NEW BEDEOBD, MASSACHUSETTS.

STOP MECHANISIK FUR LOOMS.

To all whom it may concern:

Be it known that I, Jenn OUnLLn'rTn, a citizen of the United States residing at New Bed-ford, in the county or Bristol and State of Massachusetts, have invented new and useful Improvements in Stop Mechanism for Looms, of which. the following is a specification.

' This invention relates to stop mechanism for looms and has as its object the provision of a device which will automatically apply the loom brake and stop the operation of the picker motion under certain undesirable and defective positions of the shuttles.

The device is primarily intended for use with a loom having opposite shuttle boxes and may be used with a loom of this character which is provided with a shuttle box or boxes at each end of the race way.

It is well known in the art to provide stop mechanism for looms which operate when the shuttle boxes at each. end oI the lay are full and stop the loom in order to prevent smashing of the shuttle upon the race way or in one 01 the boxes. It is for this purpose that my invention is intended and as showing a device of the character to which my invention relates, attention is called to the patent to Shanahan, $82,930, September 20, 1892. My device comprising a construction 7 somewhat similar to the structure shown in the above mentioned patent, but intended to be an improvement thereon.

One object of my invention is the provision of a device of the character described which is. extremely simple in construction, by reason or" having a minimum number of parts; which because of its simplicity is adaptable to any loom and may be readily applied without in any way changing the construction of. the loom. The above and other objects of my invention will become more obvious as the ClGSGIlPtlOILPlOCBGClS,

reference being had to the accompanying v I I observed that by employlng. this means ior drawings, in which:

Figure 1. represents the lay of a loom, showing my stop mechanism applied thereto, the breast beam being removed so as todisclose the structure ofthe more clearly stop mechanism. v

Fig 2; is a vertical cross-sectional view otta loom taken on the line w-w of Fig. 1,

- the breast beam and the remainder of my step mechanism being shown in this View.

Specification of Letters Patent.

' l -atented Oct. 18, 1921.

Application filed June 30,'1919. Serial No. 307,591.-

Fig. 3 is an elevational view of the slide bar of the brake operating mechanism.

Fig. i is a similar view of the supporting bracket for the slide bar, and

Fig. 5 is a detail view of the member for returning the dagger or kicker to inoper ative position. 7

. In the several views A indicates the lay, B the breast beam, and S the shuttle boxes of a loom which in the present instance is of the drop-box type. Adjacent the lay is the usual. protector rod P which extends entirely across the lay provided with the customary binder fingers F at each end thereof. This much of the construction shown in the drawings is old and well known in the art, and has been shown in order to illustrate the application of my stop mechanism to a loom and the relation of the mechanism to the working parts of the loom.

Attached to the lay A, and having bearings in bearing brackets 3 are rock shafts 1, 2, each rock shaft being provided with detector fingers held against the shuttle box on a line with the race way in a position to be engaged by the shuttle therein. Each oi the rock shafts is at its inner end bent at an angle to the main portion of the shaft and againin a plane parallel. with the axis of the shaft in order to form'arms 5 positinned against a dagger or kicker 6 freely pivoted upon the protector rod P.

. The rock shafts are yieldingly held with their detector fingers against their respec-.

to collars 8 adjusta ly mounted upon the rock shafts. It will be noted that by adjusting the collars around the rock shafts,

the tension of the springs may be varied so that as the springs become worn, they may be adjusted to maintain the detector fingers in proper position. It should also be rod 1?, the protector rod passing through to hold the latter in its recess. The protector rod opening is thus closed, and the kicker is free to oscillate about the protector rod.

As will be observed from an inspection of Fig. 2, the kicker 6 is provided with an upwardly extending arm 6 adapted to be engaged by the arms 5 of the rock shafts and also has a downwardly extending arm 6" disposed at an angle to the upper arm and havin a 1i) 9 at its lower end. The kicker a l is shown in operative position in Fig. 2 and is urged to this position by means or an ex-i pansible leaf spring 10 abutting the lay A at one end and the upwardly extending arm 6 of the kicker at its other end. clear upon a reading of the above in connection with the drawing the kicker may be ur ed to the position shown in full lines in Fig. 2 by its spring 10 only when the arms 5 of therock shafts have been urged backwardly by the pressure of the shuttles against the detector fingers a. When there are shuttles in the boxes on line with the race way at each end of the lay, both of the rock shafts are moved in opposition to their springs 7 and the arms 5 moved from contact with the kicker whereupon the spring 10 moves the kicker to the position shown in full lines in ,Fig. 2. r

\Vith the kicker in the position shown in Fig. 2 (the lay being shown at the end of its forward or beat-up motion), the lip 9 is adapted to engage and actuate the stop or brake operating mechanism upon the back- Ward motion of the lay. The brake operating mechanism will now be described.

becured to the breast beam B is a bracket having a vertical arm 11, directly attached to the breast beam, and a horizontal arm 12 located below the kicker, the arm 12 being provided with a slide bar 13 whose rabbeted end 1 1 has a bearing in an eye 15 upon the bracket arm 12 and is further supported for reciprocable movement upon the bracket by means of a pin 16 on the bracket arm 12 v passing through a slot 17 in the slide bar.

The bar is held in the position shown in Fig. '2 by means of a contractile spring 18 secured at 18 to the bracket, and at 18" to the slide bar. The vertical arm 11' of the "bracket at a medial point has extending therefrom a slotted arm 19 to which is pivotally secured a lever 20 by means of a pin 21, the lever being pivotally secured to the slide bar by means of pin and slot connection 22, 23. The end of the lever above the fulcrum point 21 has a pin 24 which serves to connect the lever to the usual brake mechanism (not shown) of the loom.

When there are shuttles in the boxes at each end of the lay race way, the detector fingers and arms 5 are pressed outwardly permitting the spring 10 to urge the kicker 6 about the protection rod from the dotted line position shown in Fig. 2, to the full line position shown therein. After the lay starts its backward motion, the lip 9 upon the kicker engages a shoulder 25 upon the slide. bar and continued backward movement of the lay serves to retract the slide bar in opposition to the tension of the spring 18 causing a pivotal movement of the lever 20 about its fulcrum 21 and the application of the loom brake, thus stopping the picker motion of the loom.

Means is provided for automatically re- As will be turning the kicker 6 to its inoperative position shown in dotted lines in Fig. 2, the means comprising a bar 26 inclined downwardly in the direction of th breast-beam, the forward end 26' of which engages the lip 9 of the kicker upon resumption of the picker motion of the loom after the defect causing operation of tie stop mechanism has been remedied. Continued backward movement of the lay causes the kicker to travel along the bar resulting in pivotal movement of the kicker back to inoperative 1 position. vThe bar 26 may be secured to the bracket arm 12 in any suitable manner but in the present instance it is shown as being attached thereto by means of a portion 26 bent from the bar and extending downwardly to engage a pin 28 uponthe opposlte side of the arm 12 from that shown in the drawing. It should be clear that after the kicker is urged back by the bar 26 to inoperative position, the rock shafts 2 are turned by their spring '7, the arms 5 therebv following the kicker 6 to its inoperative pds1t1on. 1

It is thought that the operation of my mechanism will be clear from the above description, the operation having been described during the course of the delineation of the mechanical construction. It should be understood that I do not limit myself to the identical construction shown in the accompanying views, the structure shown therein being but one embodiment of my invention as defined in the following claims:

1. In a stop mechanism for looms, the combination with a loom'provided with a lay having opposite shuttle boxes and the usual protector rod extending entirely across the lay, of rock shafts on the lay having cletector fingers adjacent the shuttle boxes,

a kicker freely mounted for pivotal movement upon said protector rod, and means urging said kicker into position to engage the stop operating mechanism, the arms on said rock shafts being normallypositioned in the path of said kicker and-holding the same in inoperative position.

2. In a stop mechanism for looms having a lay with opposite shuttle boxes and the usual protector rod extending entirely across the lay, the combination of a pair of rock shafts each having a detector finger adapted to be positioned adjacent the shuttle boxes, a kicker adapted to be positioned for free pivotal movement upon the protector rod, stop operating mechanism adapted to be mounted upon the breast beam adjacent the kicker, and means urging the kicker into position to engage the stop operating mechanism, said means moving the kicker only when there are shuttles in boxes at opposite ends of the raceway.

. 8. In a stop mechanism for looms having a lay with opposite shuttle boxes and the usual protector rod extending entirely across the lay, the combination of a pair of rock shafts each having a detector finger adapted to be positioned adjacent the shuttle boxes, a kicker adapted to be positioned for free pivotal movement upon the protector rod without removing the latter, stop operating mechanism adapted to be mounted upon the breast beam adjacent the kicker, and means urging the kicker into position to engage the stop operating mechanism, said means moving the kicker only when there are shuttles in boxes at opposite ends of the raceway.

4-. In a stop mechanism as specified in claim 1, means for returning the kicker to inoperative position.

5. In a stop mechanism as specified in claim 2, means for returning the kicker to inoperative position, said means being operable upon the backward motion of the lay.

6. In a stop mechanism as specified in claim 2, spring means for retaining the detector fingers against the shuttle boxes, said spring means being removable and adjust able independently of the rock shafts.

7. In a stop mechanism for looms having a lay with opposite shuttle boxes, rock shafts, detector fingers on the rock shafts positioned adjacent the shuttle boxes, stop operating mechanism on the breast beam, means for actuating said stop operating mechanism comprising a dagger-located adjacent the ends of the rock shafts, arms on the rock shafts adjacent said dagger and normally maintaining said dagger 1n inoper2-.

tive position, and spring means for retaining the detector fingers adjacent the shuttle boxes, and said arms in the path of said dagger, said means being removable and adjustableindependently of the rock shafts.

in testimony whereof I have hereunto set my hand in presence of at subscribing witness.

JOHN OUELLETTE. lVitness:

Jos. Z. BOUCHEB. 

